#include "common.h"

static const uint32_t crc32_table[256] = {
    0x00000000U, 0x77073096U, 0xEE0E612CU, 0x990951BAU, 0x076DC419U,
    0x706AF48FU, 0xE963A535U, 0x9E6495A3U, 0x0EDB8832U, 0x79DCB8A4U,
    0xE0D5E91EU, 0x97D2D988U, 0x09B64C2BU, 0x7EB17CBDU, 0xE7B82D07U,
    0x90BF1D91U, 0x1DB71064U, 0x6AB020F2U, 0xF3B97148U, 0x84BE41DEU,
    0x1ADAD47DU, 0x6DDDE4EBU, 0xF4D4B551U, 0x83D385C7U, 0x136C9856U,
    0x646BA8C0U, 0xFD62F97AU, 0x8A65C9ECU, 0x14015C4FU, 0x63066CD9U,
    0xFA0F3D63U, 0x8D080DF5U, 0x3B6E20C8U, 0x4C69105EU, 0xD56041E4U,
    0xA2677172U, 0x3C03E4D1U, 0x4B04D447U, 0xD20D85FDU, 0xA50AB56BU,
    0x35B5A8FAU, 0x42B2986CU, 0xDBBBC9D6U, 0xACBCF940U, 0x32D86CE3U,
    0x45DF5C75U, 0xDCD60DCFU, 0xABD13D59U, 0x26D930ACU, 0x51DE003AU,
    0xC8D75180U, 0xBFD06116U, 0x21B4F4B5U, 0x56B3C423U, 0xCFBA9599U,
    0xB8BDA50FU, 0x2802B89EU, 0x5F058808U, 0xC60CD9B2U, 0xB10BE924U,
    0x2F6F7C87U, 0x58684C11U, 0xC1611DABU, 0xB6662D3DU, 0x76DC4190U,
    0x01DB7106U, 0x98D220BCU, 0xEFD5102AU, 0x71B18589U, 0x06B6B51FU,
    0x9FBFE4A5U, 0xE8B8D433U, 0x7807C9A2U, 0x0F00F934U, 0x9609A88EU,
    0xE10E9818U, 0x7F6A0DBBU, 0x086D3D2DU, 0x91646C97U, 0xE6635C01U,
    0x6B6B51F4U, 0x1C6C6162U, 0x856530D8U, 0xF262004EU, 0x6C0695EDU,
    0x1B01A57BU, 0x8208F4C1U, 0xF50FC457U, 0x65B0D9C6U, 0x12B7E950U,
    0x8BBEB8EAU, 0xFCB9887CU, 0x62DD1DDFU, 0x15DA2D49U, 0x8CD37CF3U,
    0xFBD44C65U, 0x4DB26158U, 0x3AB551CEU, 0xA3BC0074U, 0xD4BB30E2U,
    0x4ADFA541U, 0x3DD895D7U, 0xA4D1C46DU, 0xD3D6F4FBU, 0x4369E96AU,
    0x346ED9FCU, 0xAD678846U, 0xDA60B8D0U, 0x44042D73U, 0x33031DE5U,
    0xAA0A4C5FU, 0xDD0D7CC9U, 0x5005713CU, 0x270241AAU, 0xBE0B1010U,
    0xC90C2086U, 0x5768B525U, 0x206F85B3U, 0xB966D409U, 0xCE61E49FU,
    0x5EDEF90EU, 0x29D9C998U, 0xB0D09822U, 0xC7D7A8B4U, 0x59B33D17U,
    0x2EB40D81U, 0xB7BD5C3BU, 0xC0BA6CADU, 0xEDB88320U, 0x9ABFB3B6U,
    0x03B6E20CU, 0x74B1D29AU, 0xEAD54739U, 0x9DD277AFU, 0x04DB2615U,
    0x73DC1683U, 0xE3630B12U, 0x94643B84U, 0x0D6D6A3EU, 0x7A6A5AA8U,
    0xE40ECF0BU, 0x9309FF9DU, 0x0A00AE27U, 0x7D079EB1U, 0xF00F9344U,
    0x8708A3D2U, 0x1E01F268U, 0x6906C2FEU, 0xF762575DU, 0x806567CBU,
    0x196C3671U, 0x6E6B06E7U, 0xFED41B76U, 0x89D32BE0U, 0x10DA7A5AU,
    0x67DD4ACCU, 0xF9B9DF6FU, 0x8EBEEFF9U, 0x17B7BE43U, 0x60B08ED5U,
    0xD6D6A3E8U, 0xA1D1937EU, 0x38D8C2C4U, 0x4FDFF252U, 0xD1BB67F1U,
    0xA6BC5767U, 0x3FB506DDU, 0x48B2364BU, 0xD80D2BDAU, 0xAF0A1B4CU,
    0x36034AF6U, 0x41047A60U, 0xDF60EFC3U, 0xA867DF55U, 0x316E8EEFU,
    0x4669BE79U, 0xCB61B38CU, 0xBC66831AU, 0x256FD2A0U, 0x5268E236U,
    0xCC0C7795U, 0xBB0B4703U, 0x220216B9U, 0x5505262FU, 0xC5BA3BBEU,
    0xB2BD0B28U, 0x2BB45A92U, 0x5CB36A04U, 0xC2D7FFA7U, 0xB5D0CF31U,
    0x2CD99E8BU, 0x5BDEAE1DU, 0x9B64C2B0U, 0xEC63F226U, 0x756AA39CU,
    0x026D930AU, 0x9C0906A9U, 0xEB0E363FU, 0x72076785U, 0x05005713U,
    0x95BF4A82U, 0xE2B87A14U, 0x7BB12BAEU, 0x0CB61B38U, 0x92D28E9BU,
    0xE5D5BE0DU, 0x7CDCEFB7U, 0x0BDBDF21U, 0x86D3D2D4U, 0xF1D4E242U,
    0x68DDB3F8U, 0x1FDA836EU, 0x81BE16CDU, 0xF6B9265BU, 0x6FB077E1U,
    0x18B74777U, 0x88085AE6U, 0xFF0F6A70U, 0x66063BCAU, 0x11010B5CU,
    0x8F659EFFU, 0xF862AE69U, 0x616BFFD3U, 0x166CCF45U, 0xA00AE278U,
    0xD70DD2EEU, 0x4E048354U, 0x3903B3C2U, 0xA7672661U, 0xD06016F7U,
    0x4969474DU, 0x3E6E77DBU, 0xAED16A4AU, 0xD9D65ADCU, 0x40DF0B66U,
    0x37D83BF0U, 0xA9BCAE53U, 0xDEBB9EC5U, 0x47B2CF7FU, 0x30B5FFE9U,
    0xBDBDF21CU, 0xCABAC28AU, 0x53B39330U, 0x24B4A3A6U, 0xBAD03605U,
    0xCDD70693U, 0x54DE5729U, 0x23D967BFU, 0xB3667A2EU, 0xC4614AB8U,
    0x5D681B02U, 0x2A6F2B94U, 0xB40BBE37U, 0xC30C8EA1U, 0x5A05DF1BU,
    0x2D02EF8DU};

/* CRC16 lookup table for fast calculation */
static const uint16_t crc16_table[256] = {
    0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50A5, 0x60C6, 0x70E7, 0x8108,
    0x9129, 0xA14A, 0xB16B, 0xC18C, 0xD1AD, 0xE1CE, 0xF1EF, 0x1231, 0x0210,
    0x3273, 0x2252, 0x52B5, 0x4294, 0x72F7, 0x62D6, 0x9339, 0x8318, 0xB37B,
    0xA35A, 0xD3BD, 0xC39C, 0xF3FF, 0xE3DE, 0x2462, 0x3443, 0x0420, 0x1401,
    0x64E6, 0x74C7, 0x44A4, 0x5485, 0xA56A, 0xB54B, 0x8528, 0x9509, 0xE5EE,
    0xF5CF, 0xC5AC, 0xD58D, 0x3653, 0x2672, 0x1611, 0x0630, 0x76D7, 0x66F6,
    0x5695, 0x46B4, 0xB75B, 0xA77A, 0x9719, 0x8738, 0xF7DF, 0xE7FE, 0xD79D,
    0xC7BC, 0x48C4, 0x58E5, 0x6886, 0x78A7, 0x0840, 0x1861, 0x2802, 0x3823,
    0xC9CC, 0xD9ED, 0xE98E, 0xF9AF, 0x8948, 0x9969, 0xA90A, 0xB92B, 0x5AF5,
    0x4AD4, 0x7AB7, 0x6A96, 0x1A71, 0x0A50, 0x3A33, 0x2A12, 0xDBFD, 0xCBDC,
    0xFBBF, 0xEB9E, 0x9B79, 0x8B58, 0xBB3B, 0xAB1A, 0x6CA6, 0x7C87, 0x4CE4,
    0x5CC5, 0x2C22, 0x3C03, 0x0C60, 0x1C41, 0xEDAE, 0xFD8F, 0xCDEC, 0xDDCD,
    0xAD2A, 0xBD0B, 0x8D68, 0x9D49, 0x7E97, 0x6EB6, 0x5ED5, 0x4EF4, 0x3E13,
    0x2E32, 0x1E51, 0x0E70, 0xFF9F, 0xEFBE, 0xDFDD, 0xCFFC, 0xBF1B, 0xAF3A,
    0x9F59, 0x8F78, 0x9188, 0x81A9, 0xB1CA, 0xA1EB, 0xD10C, 0xC12D, 0xF14E,
    0xE16F, 0x1080, 0x00A1, 0x30C2, 0x20E3, 0x5004, 0x4025, 0x7046, 0x6067,
    0x83B9, 0x9398, 0xA3FB, 0xB3DA, 0xC33D, 0xD31C, 0xE37F, 0xF35E, 0x02B1,
    0x1290, 0x22F3, 0x32D2, 0x4235, 0x5214, 0x6277, 0x7256, 0xB5EA, 0xA5CB,
    0x95A8, 0x8589, 0xF56E, 0xE54F, 0xD52C, 0xC50D, 0x34E2, 0x24C3, 0x14A0,
    0x0481, 0x7466, 0x6447, 0x5424, 0x4405, 0xA7DB, 0xB7FA, 0x8799, 0x97B8,
    0xE75F, 0xF77E, 0xC71D, 0xD73C, 0x26D3, 0x36F2, 0x0691, 0x16B0, 0x6657,
    0x7676, 0x4615, 0x5634, 0xD94C, 0xC96D, 0xF90E, 0xE92F, 0x99C8, 0x89E9,
    0xB98A, 0xA9AB, 0x5844, 0x4865, 0x7806, 0x6827, 0x18C0, 0x08E1, 0x3882,
    0x28A3, 0xCB7D, 0xDB5C, 0xEB3F, 0xFB1E, 0x8BF9, 0x9BD8, 0xABBB, 0xBB9A,
    0x4A75, 0x5A54, 0x6A37, 0x7A16, 0x0AF1, 0x1AD0, 0x2AB3, 0x3A92, 0xFD2E,
    0xED0F, 0xDD6C, 0xCD4D, 0xBDAA, 0xAD8B, 0x9DE8, 0x8DC9, 0x7C26, 0x6C07,
    0x5C64, 0x4C45, 0x3CA2, 0x2C83, 0x1CE0, 0x0CC1, 0xEF1F, 0xFF3E, 0xCF5D,
    0xDF7C, 0xAF9B, 0xBFBA, 0x8FD9, 0x9FF8, 0x6E17, 0x7E36, 0x4E55, 0x5E74,
    0x2E93, 0x3EB2, 0x0ED1, 0x1EF0};

uint32_t crc32_update(uint32_t crc, const uint8_t *data, uint32_t length) {
  crc = ~crc;
  for (uint32_t i = 0; i < length; ++i) {
    uint8_t byte = data[i];
    crc = crc32_table[(crc ^ byte) & 0xFF] ^ (crc >> 8);
  }

  return ~crc; // 最终反转
}

uint16_t crc16_update(uint16_t crc, const uint8_t *data, uint16_t length) {

  for (uint16_t i = 0; i < length; i++) {
    crc = (crc << 8) ^ crc16_table[((crc >> 8) ^ data[i]) & 0xFF];
  }

  return crc;
}

uint8_t sum_update(uint8_t checksum, const uint8_t *data, uint16_t length) {
  for (uint16_t i = 0; i < length; i++) {
    checksum += data[i];
  }
  return checksum;
}
